Ask question

Ask question

All categories

ValentinkaMS [17]

3 years ago

12

A family installs and fills an aboveground pool. The swimming pool costs $850 to install, and it costs $75 per thousand gallons

of water to fill.
Which function represents the total cost, C, of installing and filling a pool with x thousands of gallons of water?

1 answer:

kari74 [83]3 years ago

6 0

Answer:

925????

Step-by-step explanation:

You might be interested in

F(x) = x^2 + 4x. G(x) = 1 + e^2x. As a single logarithm find fg(x) = 21

vfiekz [6]

Answer:

1/2 log2

Step-by-step explanation:

I hope you understand

8 0

2 years ago

Millie has a box of 1 hundred cubes. She also has a bag of 70 cubes. How many trains of 10 cubes can she make?

ANTONII [103]

She has a total of 170 cubes

170/10=17 trains

7 0

3 years ago

Read 2 more answers

Which two functions are inverses of each other?

liraira [26]

Answer:

Option 3 - f(x)= 4x, $g(x) = \frac{1}{4}x$

Step-by-step explanation:

To find : Which two functions are inverses of each other?

Solution :

Two functions are inverse if $f(g(x))=x=g(f(x))$

Now, we find one by one

1) f(x)= x, g(x) = -x

$f(g(x))=f(-x)=-x\neq x$

Not true.

2) f(x)= 2x, $g(x) = -\frac{1}{2}x$

$f(g(x))=f(-\frac{1}{2}x)=2\times(-\frac{1}{2}x)=-x\neq x$

Not true.

3) f(x)= 4x, $g(x) = \frac{1}{4}x$

$f(g(x))=f(\frac{1}{4}x)=4\times(\frac{1}{4}x)=x$

$g(f(x))=f(4x)=\frac{1}{4}\times 4x=x$

i.e. $f(g(x))=x=g(f(x))$ is true.

So, These two functions are inverse of each other.

4) f(x)= -8x, $g(x) =8x$

$f(g(x))=f(8x)=8\times(-8x)=-64x\neq x$

Not true.

Therefore, Option 3 is correct.

6 0

3 years ago

A subtending arc on a circle with a radius of 4.5 centimeters has an arc length of 8π. The measure of the angle subtended by the

dem82 [27]

Answer: 320°

Step-by-step explanation:

This is a circle geometry.

The arc length of the circle is given to be 8πcm and the radius is 4.5cm.

Now the length of an arc of a circle is

Arc length = πr0°/180° or 2πr0°/360°

To find the angle 0° subtend at the center we equate the arc length with the formula and solve for 0°.Now we go

πr0°/180 = 8π, convert to a simple linear equal and solve for the angle.

πr0° = 8π × 180

0°. = 8π × 180

-----------

π × r

= 8 × 180. 8 × 180

-------- or ---------

9/2. 4.5

= 8 × 180 × 2

------------

9

= 8 × 20 × 2

= 320°

or 8 × 180/4.5

= 1440/4.5

= 320°

4 0

3 years ago

En is 80 years old and her grandson mark is 5 years old. in how many years will jen be 4 times older than mark?

Harlamova29_29 [7]

It would be 20 years because if En is 100 Mark will be 25. 25 times 4 is equal to 100

6 0

3 years ago